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探讨环境内分泌干扰物已烯雌酚(DES)对成年动物附睾组织形态的影响,将DES皮下注射成年仓鼠(剂量为每天1mg/kg)连续1周后,用光镜和电镜观察附睾组织形态的变化,并用脱氧核糖核酸末端转移酶介导的dUTP缺口末端标记法(TUNEL)检测附睾管上皮细胞和精子的凋亡情况。结果,DES处理后附睾头和附睾尾萎缩,附睾管变细。附睾管上皮细胞形态出现明显的改变,附睾上皮细胞和精子均出现大量凋亡,附睾管管腔内充满发育异常的生精细胞,少见长形精子。结果表明,DES能诱发成年动物附睾形态的改变,这可能是造成成年动物生精障碍的重要原因。 相似文献
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探讨了在二乙基己烯雌酚(DES)诱发成年动物生精细胞凋亡过程中睾丸一氧化氮(NO)生成和生精细胞一氧化氮合酶(eNOS和iNOs)表达的变化,以期为阐明DES诱发生精细胞凋亡机理的研究提供基础资料。成年雄性仓鼠皮下注射不同剂量DES(分别为0.01、0.1和1mg/kg体重),连续注射7d后取其睾丸,进行NO含量的测定和eNOS、iNOS免疫组化染色。电镜观察生精细胞超微结构的变化,并用TUNEL法检测睾丸中生精细胞凋亡的变化,苏丹Ⅲ染色法检测睾丸生精小管内脂滴分布的变化。结果显示:NO的生成与DES呈剂量依赖性。DES处理后,在1mg/kg体重剂量组,大量生精细胞表达eNOS和iNOS,并出现大量凋亡,退化的生精细胞胞浆内有大量髓样结构,并有大量脂滴分布于生精细胞内和细胞间。eNOS和iNOS阳性生精细胞与凋亡的生精细胞数量和类型基本一致,主要为精母细胞和圆形精子细胞。 相似文献
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《畜牧与兽医》2014,(8):72-74
将18只8周龄雄性昆明小鼠随机分为3组,适应饲养1周后分别腹腔注射50μL、每千克体重含0(对照组)、10(试验1组)和100 mg(试验2组)双酚A的乙醇,每天1次,连续2周。处理结束,取附睾和性腺制备组织切片,通过改良甲苯胺蓝染色法测定附睾和性腺组织肥大细胞数量与分布的变化。结果:在附睾头被膜,试验2组增加到45.37个/mm2,在附睾头间质,试验1、2组每1 mm2分别增加到36.74、38.16个,显著高于对照组(P<0.05);在附睾尾被膜,试验2组增加到50.24个/mm2,在附睾尾间质,100 mg/kg组每1 mm2增加到43.22个(P<0.01);在精囊腺被膜,试验2组增加到56.25个/mm2,在精囊腺间质,对照组肥大细胞数为43.35个,试验1、2组每1 mm2分别增加到54.43、58.65个(P<0.01);在前列腺被膜,试验组与对照组相比,均无明显变化;在前列腺间质,试验2组每1 mm2增加到66.15个(P<0.01)。结果表明,双酚A暴露影响小鼠附睾和性腺肥大细胞数量和分布,可能对附睾中生精细胞的进一步发育成熟也有影响。 相似文献
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试验主要探讨金黄色葡萄球菌对小鼠乳腺组织肥大细胞的影响,为研究肥大细胞在乳腺炎中的作用提供新的动物模型。
1 材料与方法
1.1 材料
7~8周龄BALB/c系封闭群清洁级未经产母鼠24只,体重20~25g;成年公鼠12只,均购自河北医科大学实验动物中心。 相似文献
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《动物医学进展》2015,(12)
采用组织学和组织化学方法探讨炔雌醚暴露对小鼠附睾和副性腺肥大细胞数量及分布的影响。将15只8周龄雄性昆明小鼠随机分为3组,适应饲养1周后分别腹腔注射50μL含0、0.1、1mg/kg体重炔雌醚的橄榄油,每天1次,连续2周。处理结束,取附睾和副性腺并制备组织切片,通过甲苯胺蓝染色测定附睾和副性腺组织肥大细胞数量与分布的变化。结果显示,在附睾头被膜,0.1mg/kg和1mg/kg组分别增加到47.25个/mm2和59.38个/mm2(P0.01),在附睾头间质,0.1 mg/kg和1 mg/kg组分别增加到41.65个/mm2和49.45个/mm2(P0.01),显著高于对照组;在附睾尾被膜,0.1mg/kg和1mg/kg组分别增加到51.82个/mm2和57.47个/mm2(P0.01),在附睾尾间质,0.1mg/kg和1mg/kg组分别增加到44.43个/mm2和56.46个/mm2(P0.01);在精囊腺被膜,0.1 mg/kg和1mg/kg组分别增加到57.38个/mm2和62.35个/mm2(P0.01),在精囊腺间质,0.1mg/kg和1mg/kg组分别增加到48.27个/mm2和61.38个/mm2(P0.01);在前列腺被膜,0.1mg/kg和1mg/kg组分别增加到56.52个/mm2和64.75个/mm2(P0.01),在前列腺间质,0.1mg/kg和1mg/kg组分别增加到55.28个/mm2和82.47个/mm2(P0.01)。结果表明,炔雌醚暴露影响小鼠附睾和副性腺肥大细胞数量及分布,推测可能对附睾中生精细胞的进一步发育成熟有影响,其机制有待进一步研究。 相似文献
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旨在研究免疫细胞在健康雄性牦牛附睾和输精管的分布。采用免疫组织化学和实时荧光定量(qRT-PCR)方法对幼龄(5~6月龄)及成年(3~4岁)牦牛附睾(头、体、尾)和输精管中CD68+巨噬细胞、CD3+ T淋巴细胞、CD79α+ B淋巴细胞、IgA+和IgG+浆细胞的分布特征及其表面标志分子的表达水平进行研究。结果显示:CD68+巨噬细胞、CD3+ T淋巴细胞、CD79α+ B淋巴细胞、IgA+和IgG+浆细胞主要分布在附睾管和输精管的上皮和间质;另外,CD68和CD3 mRNA和蛋白水平在各年龄组牦牛附睾头和附睾体显著高于附睾尾和输精管(P < 0.05),而CD79α、IgA和IgG mRNA和蛋白水平在附睾尾和输精管显著高于附睾头和附睾体(P < 0.05);此外,在成年牦牛附睾和输精管CD3、CD79α、IgA、IgG、CD68 mRNA和蛋白水平均显著高于幼龄牦牛(P < 0.05)。综上提示,牦牛附睾头可能主要是细胞免疫发生的位点,而附睾尾和输精管则主要进行体液免疫应答,此外,成年牦牛附睾和输精管的局部免疫可能更完善,以上数据为进一步研究高原牦牛局部生殖免疫和病理提供了形态学资料。 相似文献
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通过对小鼠小肠肥大细胞(MC)的分布特征及显微结构进行研究,揭示MC在小肠中可能的功能。将组织固定于Carnoy’s液中,常规包埋、切片,甲苯胺蓝染色法显示MC,采用透射电镜对MC的超微结构进行观察。结果显示:①MC主要分布于小肠的黏膜、黏膜下层、肌层和浆膜,小肠绒毛上皮细胞间亦可见较多的MC存在;②透射电镜观察发现在上皮细胞间也可见有MC分布,MC颗粒未见特殊结构。MC广泛分布于小肠各层,尤其在上皮细胞间有大量MC存在,表明其可能是构成小肠黏膜免疫和调节小肠运动的重要细胞。 相似文献
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In order to get mast cells in mice abdominal cavity,we used three Percoll gradient separation methods to extract mast cells from mice abdominal cavity,and counted cell viability, cell purity and the total number of cells.The 3 mL Percoll gradient separation liquids in the centrifugal tube from top to bottom were divided into 4 layers to analyze the dynamic distribution of mast cells.The results showed that in the method Ⅰ,the cell viability, cell purity and the total number of cells were (83.51±14.00)%,(69.04±11.75)% and(10.60±5.20)×105 /mL,respectively;in the method Ⅱ,the cell viability, cell purity and the total number of cells were (85.71±9.23)%,(87.10±3.93)% and(11.64±5.73)×105 /mL,respectively;in the method Ⅲ,the cell viability, cell purity and the total number of cells were (72.25±24.81)%,(68.34±10.20)% and(8.87±5.18)×105 /mL,respectively.The cell viability and total number of cells in the three groups were not significantly different(P>0.05).The cell purity of method Ⅱ was extremely significantly higher than that of methods Ⅰ and Ⅲ (Ρ<0.01). The dynamic distribution of mast cells in the Percoll gradient separation liquid was that the cell viabilities of 3,4 layers were extremely significantly higher than 1 layer (Ρ<0.01),significantly higher than 2 layer (Ρ<0.05); the cell purity of 3 layer was extremely significantly higher than 1,4 layers (Ρ<0.01), significantly higher than 2 layer (Ρ<0.05); the number of cells of the 3,4 layers were extremely significantly higher than 1,2 layers (Ρ<0.01). Therefore, adopting the method Ⅱ, layer 3 of extraction, the middle and lower 0.5 mL, which was close to the interface parts in 30%∶ 80% of the Percoll gradient separation liquid, the separation of mast cells of mice peritoneal cavity was best. 相似文献
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For observing and analyzing the motpha,distribution and quantity of mast cells (MC),the differentiation time and degree of immune organs and digestive organs in different ages of chicken were fixed by Carnoy's,stained by AB/SO.The results showed that MC concentrated in the thymus medulla;In spleen,MC distributed in the junction of red pulp and white pulp;MC were seen in the tissue around the lymphoid nodules in bursa of fabricicus tissue. MC distributed with the lamina propria and compound tubular gland in stomach;MC distributed in the lamina propria,sub mucosa of intestine;More MC in liver concentrated around sinusoids and the central vein.The number of MC in the main immune organs and digestive organs of 1 to 7 day old chicks showed an increasing trend. 相似文献
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AIDEN P. FOSTER 《Veterinary dermatology》1994,5(1):17-20
Resumen— El propósito de este estudio era investigar el número de mastocitos dérmicos en diferentes partes de la piel de gatos con enfermedad que no afecta a la piel. Se hizo un recuento de el número de mastocitos en 10 partes diferentes de la piel de 12 gatos sin evidencia de enfermedad de la piel. Se fijaron muestras de biopsia de piel en fijador Carnoy y formalina neutral atenuada, y se tiñeron con azul touluidina. Se realizaron recuentos de celulas de 6 campos de alto poder (400), de cada parte. Los recuentos de mastocitos combinados para todos los gatos, todas las partes y ambos fijadores variaban de 0–60 con un promedio de 12.5 por campo de alto poder y eran mas altos en el aspecto caudal del pabellón auricular y en la barbilla. El tipo de fijador usado no pareció influir en el recuento de mastocitos. [Foster, A. P. A study of the number and distribution of cutaneous mast cells in cats with diseases not affecting the skin (Un estudio de el número y distribución de mastocitos cutaneos en gatos con enfermedad que no afecta a la piel).
Abstract— The purpose of this study was to investigate the number of dermal mast cells in different skin sites from cats with disease not affecting the skin. The number of mast cells in the skin of 12 cats without evidence of skin disease was counted from 10 different skin sites. Skin biopsy samples were fixed in Carnoy's fixative and neutral buffered formalin and stained with toluidine blue. Cell counts from 6 high power fields (400) were made for each site. Mast cell counts combined for all cats, all sites and both fixatives ranged from 0 to 60 with a mean of 12.5 per high power field and were highest from the caudal aspect of the pinna and the chin. The type of fixative used did not appear to influence mast cell counts. 相似文献
Abstract— The purpose of this study was to investigate the number of dermal mast cells in different skin sites from cats with disease not affecting the skin. The number of mast cells in the skin of 12 cats without evidence of skin disease was counted from 10 different skin sites. Skin biopsy samples were fixed in Carnoy's fixative and neutral buffered formalin and stained with toluidine blue. Cell counts from 6 high power fields (400) were made for each site. Mast cell counts combined for all cats, all sites and both fixatives ranged from 0 to 60 with a mean of 12.5 per high power field and were highest from the caudal aspect of the pinna and the chin. The type of fixative used did not appear to influence mast cell counts. 相似文献